Nonreciprocal acoustic transmission in cascaded resonators via spatiotemporal modulation

Journal Article (Journal Article)

Systems that break transport reciprocity have recently opened exciting possibilities for wave manipulation. Here we report nonreciprocal acoustic transmission in cascaded resonators that are modulated in space and time. An analytic approach is developed and the design strategy is discussed for realizing a physical system based on this approach. The theory is verified numerically by finite-difference time-domain (FDTD) simulations, with a one-way isolation factor greater than 25 dB out of just two resonators. Our work provides a feasible route to achieve nonreciprocal acoustic transmission in a compact manner.

Full Text

Duke Authors

Cited Authors

  • Shen, C; Li, J; Jia, Z; Xie, Y; Cummer, SA

Published Date

  • April 22, 2019

Published In

Volume / Issue

  • 99 / 13

Electronic International Standard Serial Number (EISSN)

  • 2469-9969

International Standard Serial Number (ISSN)

  • 2469-9950

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.99.134306

Citation Source

  • Scopus